Potentiality of open burnt clay as an adsorbent for the removal of Congo red from aqueous solution

Open burnt clay was studied as a potential adsorbent for the adsorption of Congo red (a reactive dye) from aqueous solution. The effect of contact time, pH, adsorbent dosage and temperature were studied. It was observed that the amount of Congo red retained increase with decreasing pH and increasing initial concentration. Removal percentage at pH 2 and 3 are almost same. The adsorption capacity of regenerated burnt clay was showed more than 98 % recovery of the adsorption efficiency of initial virgin adsorbent. The equilibrium data were described well by both Langmuir and Freundlich isotherm model. The adsorption capacity of some natural adsorbents, namely rice husk, wood charcoal, tea waste etc. were also investigated and compared with that of open burnt clay.

Most popular related searches

Related articles

Producing charcoal is actually a major industry. It really is easy to create charcoal utilizing a process called pyrolysis. Special machinery is produced that will be able to not just chip up all of the wood that will be process, yet it is then sent into a pyrolysis plant or machine which can help make the charcoal. This can be done for both a small and enormous-scale. There is always will be a marketplace for this system. Charcoal could be made out of different kinds of lumber, and a multitude of other byproducts....

Alternative treatments, such as, NaOH, ultrasound assisted (UA) and supercritical CO2 (SCO2), were performed to improve the potential of rice husk as adsorbent to remove methylene blue (MB) from aqueous media. All the treatments improved the surface characteristics of rice husk, exposing its organic fraction and/or providing more adsorption sites. The Langmuir and Hill models were able to explain the MB adsorption for all adsorbents in all studied temperatures. The experimental and modeled parameters demonstrated...

Variation in hospital wastewater (HWW) pollutants and differences with municipal wastewater (MWW), make the use of biokinetic coefficients obtained from activated sludge in the MWW treatment unprofitable for designing, modeling and evaluation of biological processes for HWW treatment. Since this study was conducted to evaluate the performance and biokinetic coefficients of a fixed bed bioreactor (FBBR) using rice husks as fixed media in HWW treatment, a new modified method was also proposed for biokinetic estimatio...

India produces 200 million tonnes of paddy. One tonne paddy gives 700 kg of rice and 300 kg of rice husk. Rice husk has heating value (calorific value) of 3000 kcal per kg. So it is excellent fuel. So we can burn rice husk and produce steam and generate power from it. For villages 10 KW power plant based on steam engine is quite appropriate which can process 4000 kg. of paddy into unpolished rice in 8 hours and it will also generate rice husk of 1200 kg. as fuel. In processing 4000 kg. of paddy, about 700...